Climbing apparatus



FIG. 1 is a perspective view of a climbing apparatus;

FIG. 2 is a front view thereof, the rear view being a mirror image;

FIG. 3 is a left-side view thereof;

FIG. 4 is a right-side view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The broken lines depict environmental subject matter only and form no part of the claimed design. 

The ornamental design for a climbing apparatus, as shown and described. 